Xenomai 4 / EVL: Out-of-band access to EtherNet interface

[Kevin Hall via Xenomai]

Hi,


Is OOB I/O service a candidate for an EtherNet-based fieldbus protocol? I
read in a comment that it only applies to VLAN-tagged IP protocols, but I
don't know how old that is or if things have changed. I am able to send and
receive packets when using send() and recv(), but since these are not
out-of-band, I am often times seeing large delays in the processing of
data. That's why I am trying to use oob_read(...) and oob_write(...).


Additional Information: I am using Xenomai 5.15 with a Raspberry Pi 4. The
fieldbus protocol is EtherCAT (0x88a4).


I would greatly appreciate any suggestions or help.


Thank you!


Kevin Hall